Gas heating stove



Nov. ,3 1925 H.Ki-\MPE GAS HEATING STOVE Filed Aug. 29, 1921 8 Fig.3.

Fig.3.

I Fig.4.

Patented Nov. 3, 1925.

cameo stares HANS KAMPE, OF BERLIN, GERMANY.

GAS HEATING STOVE.

Application filed August 29, 1921.

Serial No. 495,520.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. 11., 1313.)

T 0 all whom it may concern:

Be it known that I, HANs KAMPE, a citizen of the German Republic, and a resident of Berlin, Germany, have invented certain new and useful Improvements in Gas Heating Stoves (for which I have filed application for Letters Patent in Germany 011 December 22, 1921, Patent No. 396357; in Great Britain on January 6, 1921, Patent No. 156656; in Belgium on March 2 1, 1921, Patent No. 294865; in France on March 31, 1921, Patent No. 533125; in Czechoslovakia on August 13, 1921, Patent No. 11985), of which the following is a specification.

My invention relates to gas heating stoves, more especially to gas heating stoves with freely radiating incandescent elements, and with radiators placed above the said incandescent elements. In general, gas heating stoves should be designed to meet two principal requirements. The heat produced by them should be employed as completely as possible to heating the air of the room, and this air should not become contaminated by the exhaust gases or by the dust which is burnt in consequence of the over-heated air of the room.

In the usual form of gas heating stoves, the gas is burnt, in open flames, while the air of the room is heated in the stove itself and at its surface walls, and from there is flowing back into the room again. In consequence of the high temperature of the heating gases the dust, collecting on the horizontal surfaces of the heating elements or carried along by the air, which comes in contact with the outer surface of the heating elements, is burnt, and the air in the room to be heated is more and more deteriorated.

Stoves with radiating incandescent elements and with radiators without an exhaust tube leading into the chimney flue permit the eX- haust gases and the burnt dust to enter into the room again. The object of my invention is to eliminate these drawbacks. The stove according to the invention possesses also a set of free-radiating incandescent elements with a refractory back wall, from which the heat is thrown back, and a radiator placed above the main body. But, in distinction from the prior gas heating stoves, the main body enclosing the incandescent elements and the refractory back wall of the novel stove, is connected in its full sectional area to the radiator and, by way of this to the chimney flue. In consequence, all exhaust gases and the air passing by the incandescent elements and the refrac tory plate will completely pass out into the chimney flue together with the combusted dust. The air flowing around the outside of the heating body will not be pre-heated by the incandescent bodies and the refractory plate, but will meet the surface of the radiator at a great difference in temperature. The great heating surface and sectional area of the radiator, at the same time, will cause a thorough distribution of the heat to be transmitted by the radiator, so that the latter will be heated only to such temperatures, that do not cause the dust suspended in the air of the room to be burnt.

In the drawing accompanying this specification, several modifications embodying the principles of my invention are illustrated by way of example. In the drawing Fig. 1 is a front elevation of the gas heating stove;

Fig. 2 is a vertical cross-section on line 2-2 of Fig. 1 and Fig. 3 is a horizontal cross-section on line 3 3 Fig. 1.

Fig. 4 is a while Fig. 5 is a vertical section on line 5-5, of Fig. 4 and Fig. 6 is a horizontal section on line 66 in Fig. 4:.

Fig. 7 is a horizontal section of another modification of the radiator.

The gas heating stove comprises, in the usual manner, a main body a and a top formed by the radiator 6 (Figs. 1 to 3). Arranged within the main body are incandescent elements 0! with a heat-refractory plate a positioned at the back of the incandescent elements. Both. the elements and the plate, are made of refractory material. The main body (1 opens forward only at the incandescent elements 03 and contains, besides the latter, the gas-inlet projecting into the incandescent elements d. The top 6 comprises a number of heating or radiator elements of the type used in steam heating installations. Preferably they are of the full depth of the gas-heating stove, so as to be of the possible greatest free sectional front-view of a modification,

area. In height, they are formed so as to offer, in connection with their great depth, a heating surface sufficiently large in pie portion to the surface of the incandescentelements (Z, so that the heat projected from the incandescent elements into the radiator elements will be transferred to the air of the room as completely as possible. A transverse duct 6 connects the single radiator ele ments and leads, by way of an extension f, into the chimney flue.

The heat collecting in the incandescent elements d during the operation of the gas heating stove is distributed into the room to a great part, viz to about one half of the total heat, as has been proved by actual trials. The remaining portion of the heat is absorbed by the radiator Z). The exhaust gases from the gas flames and the air sucked in from the room by the draught in the chimney flue and passing by the incandes cent bodies are passed, together with the more or less completely burnt dust con tained in the air, by way of the radiator 6 into the chimney flue. and are, thereby, made harmless. The combustion chamber a in the main body a has connection only with the radiator b, and does, therefore, not allow any of the air heated at the incandescent elements cZ and the refractory plate a to flow back into the room.

In the modification disclosed in Figs. 4- to 6 the proportions are the same as in the construction heretofore described. The construction of this modification is distinguished from the construction heretofore described only by shape of the radiator 6. Instead of single radiator elements, the radiator comprises heating walls of the zig zag sectional shape 9, which oppose each other with their edges, as shown in Fig. 6, so that the resulting cross-section of the radiator will also be of zigzag shape. Hereby the manufacture and "the assembling of the gas heating stove is considerably simplified. I v

A. stove of this type may be heated also by means of a liquid fuel. In this case preferably a carbureter m is mounted above the incandescent elements 0!, to which the liquid In order to pre-heat the stove, an auxiliary carbureter n, with a heating lamp 0 underneath it, is arranged at the side ofthe stove. A supply pipe n is leading from the auxiliary carbureter n to a regulating valve 10 connected to the burner tube 9. If the stove is sufficiently heated, the heating lamp 0 is extinguished.

Having thus particularly described the nature of my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A gas heating stove comprising 1n combination, a main body open in front, a plurality of incandescent elements arranged within and occupying nearly the whole breadth-of said main body, a refractory plate arranged behind said incandescent elements but at a distance from the closed back wall of said body, a combustion chamber therein above said incandescent elements, and a radiator arranged above and over the whole breadth of said main body for preventing the room airfrom ascending around the said refractory plate and the said incandescent elements to the outside of the said radiator, substantially as described.

2. A gas heating stove comprising in com bination, a main body open in front, a plurality of incandescent elements arranged within and occupying nearly the whole breadth of said main body, a refractory plate arranged behind said incandescent elements but at a distance from the closed back wall of said body, a combustion chamber therein above said incandescent elements, and a radiator of zig-zag form in horizontal cross sectional shape arranged with its straight faces in vertical direction above and over the whole breadth of said main body, substantially as described.

In testimony whereof I affix my signature.

HANS KAMPE. 

